hey thx for the replies on previous thread about the heads..another ? , since i have the 3100 motor can i rebuild the heads on it to be better than the 3400 heads i have now ? just curious since this 3100 engine is just sittin maybe i can build up to exceed the 3400 if at all possible....i have a bad valve on the 3400 so just trying to figure out different options..my baby has nitrous now and runs great other than the bad valve...so replies will be highly appreciated...