Mb Motoring, cheap wheel discount tire used to sell 20 x 10
I love Big Blocks so i like it, i personally would prefer a bigger bore and less stroke. since it is 4.250 bore and 4.370 stroke
They fixed the long short port issue but converting it to metric and moving 3 head bolts can be a pain. Only really one after market source
raylar engineering
They have the same triggering as an ls1 and firing order