I'd offer 600.... that has seemed to be the mean price for engine kits.... and the conley is small.... and thats one of the very early kits.... not the 427 or the stinger.
So nice to see the Black Widow price coming down .That's one large engine . I would love to make one .Glad Martin Model picked up the production to many casting kits have been discontuied . From what I see Conley sold the rights to an Aussie business the Challenger is gone . Billet or Black Widow.
This appears to be the first supercharged variant Gary did... he had the original in an RC 32 highboy roadster. Was featured in hot rod magazines swim suit issue in 1987. So that would be the vintage of this kit... 1987- 1990s. Zooming in on the box...post mark is Dec. 5 1988
Right before Coles Power models closed he had an incomplete challenger V8 that he wanted 850 for. Sure wish someone would have purchased the patterns and rights to cast them.