302 help

[lone racer]

Hey ,need help figuring what is going on....got this 302(d10e) .040 over,guy gave it to me and said spun a bearing HAVE IT! yep... any way took pan off pulled rod,main ,and they look great crank also,BUT SOMETHING DONT SEEM RIGHT ABOUT IT ,are the main bearings suposed to have ones that wrap over on the cap???cause this dont,their like rod bearings,flat. before i pulled it apart it had ALOT of crank end play,slideing back and forth what looked like about 3/8" ,he said it was a fresh rebuild that went bad???sat in his basement for years ,its verry clean,pistons,rods look new/recon, bore is nice havent pulled cam but it looks good,have 2 sets of heads and everything is oil free sludge free ,has a rpm intake and headers,I want to sell it actually,so if it sounds like something u want to play with let me know!i have no purpose for it but want to fix if i cant sell any ideas on the bearings/end play??