I've got a 1954 4 door bel air that I am restoring. It's got the 235 in it and the two speed powerglide. So now I have a question for you guys. The 235 probably needs rebuilt, the oil blow off tube is plugged off which tells me it was leaking oil. A rebuild kit for that engine is so expensive its about the same as buying a new engine. So should I keep the 6 (like I originally planned) or should I upgrade to a 283. If so I need a information on the swap. Thank you guys .