WOW! 4.25" Stroke Small Block Cranks now availavbe from BPE!

I've been out of Mopars for a few years but have really been following this thread. I like the idea of the 4.25 stroke and the extra cubic inches but it seems like most people will run this setup with aftermarket heads. That's great if you got the bucks but if I spend this kind of money on the block I won't be able to afford new heads, too. I have a set of "X" heads that were ported in the late 70s that have been sitting on the shelf for the last 30 years. They were on a standard bore 69 340 with 12.5-1 pistons that ran pretty well back in the day. :mrgreen: Do you think these would choke off an engine like this and you'd almost need to run modified RHS, W2 (etc.), or aluminum heads? Don't beat up on me too bad - I'm just getting back into this and I'm sure I'm not the only guy here wondering this. :toothy9: