I always lean toward a V/8,however either way will work just fine.Thats a decision you will have to make.A lot of guys here will say go with the inline 6,while others will say go with the V/8.I have a 350 V/8 in mine,and hope that oneday I will be able to do one up with a 6 cyl.One thing for sure they are a lot of fun no matter which way you go.