Bad idea! 360's and 390's are from the same engine family, they are big and heavy compared to something like a 351w or 302. you would be better off with a 351w if you want more cubes. They share alot with the 302/5.0 and there is a ton of speed parts available for them. You can stroke one out to 400+ cubes if you want. Don't confuse the 351w with a 351c which is completely different than a 351w.You can put a 360/390 in if you want but good luck finding headers and mounts.