heads for 340

I agree, you need to get new heads checked out my buddy's RHS heads the valve seized and piston bent the valve, two main things to get checked out is valve clearance and the valve job runout. New heads are a great deal especially if you aren't gonna do your own porting but if it's a mild build under 400hp any 340/360 will do, also don't forget about EQ heads lighter than RHS there real heavy suckers.