Happy to do them for you (does take an hr or so), but first you wld have to state for which previously successful sire with your bitches damline you wanted Magic Sprite's dam, and his sireline dams matched up to.

I did those percentages for Jack on how Burn one Down's dam, and his sireline dams replicated "Head Bound" who in turn nicked previously with his bitches damline resulting in Outside Pass and Vegas Bound.

If we look up the dams attatched to Magic Sprite's sireline beginning at:

Pitstock Park with Cosmic Rumble CLICK HERE looking at the table below the pedigree to mark off the cross duplications it results in 3 damlines(Dalla's Charm, Glitter Girl & Rocket Rev), not being duplicated. Remember we cant use the Pistock Park duplications that are present because we have to duplicate her using different individuals. So with those 3 damlines exposed Pitstock Park covers that Cosmic Rumble nick at approx 81% within 5 gens.

Miss Dusty Lee with Cosmic Rumble. It's probably best to imagine all her pedigree in black as we cant use the Miss Dusty Lee duplication, needing once again to recreate her using different individuals and mark off the cross duplications from the table below the pedigree CLICK HERE .Once again only 3 of the 16 lines within 5 generations are not cross duplicated. Smart Conjuror,Silky Echo(Little Gorgeous) & Rapid Jet. Surprisingly tho it looks like she covers again approx 81% of Cosmic Rumbles nick. I didn't think it was going to get up into that high intensity bracket, just looking at the pedigree initially.

Sobbing Sal with Cosmic Rumble. Once again using the table below as you cant count the Sobbing Sal duplication, CLICK HERE you're looking at only 50% cross duplication within 5 gens, and about 69% within 6 gens I think, neither of which I wld consider intense enough for producing a city type conveyance.

Glamorous with Cosmic Rumble doesnt give up much cross duplication at all thru the 2 dams CLICK HERE especially so with Shining Chariot not being cross duplicated even tho appearing in red. So about approx 56% cross duplication within 5 gens there.

So in summary Ted, your best hope of creating a breeding parallel to Cosmic Rumble thru the dams in Magic Sprite's sirelines are with Miss Dusty Lee and Pitstock Park.

I personally tend to want at least an 88% cross duplication with one of those dams. You may be able to get away with 2x doses of 81%. Also with the quality of racer possibly dropping in the future due to lack of breeding, an 81% cross duplication intensity may well be sufficient. Who knows whats to come.

Once again this is only with Cosmic Rumble. Hopefully Magic Sprite's sires damlines may click with another sire that's been successful with your girls damline carrying the desired amt of cross duplication intensity required. It is quite a complex pedigree to break down as you can already see by the comparisons I've drawn.

All the best with the litter.Regards Ryan.

All the best with them mate.