I am not knowledgable mechanically so forgive me in advance. I have a 72 demon with a 340 block 69 and 360 heads with a purple cam 282/482. The 360 heads are 1.88 intake 1.62 exhaust. I have a complete set of X heads with 2.02 intake and 1.60 exhaust... this is a 4spd street car with a weiand dual plane intake and 2.25 stock exhaust manifolds. 355 rear sure grip. Will I have any noticeable power/torque swapping the heads?