I have the aluminum heads and the auto advance distributor and a linkert are these a good combination, also i believe i have the 27 tooth gear and 100 link chain. I haven't noticed any other modifications other than the cylinder is bored .10 over and someone was running drag pipes,If i don't buy a new complete exhaust i am thinking about shot guns or porkers how important a roll will back pressure play with a 45? Maybe someone knows the key things to do,.. to a 45,.. to get the most out of them. ?
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