exactly waht the tittel says, what should it cost? this shop got the motor for me with 80,000 miles on it, and they replaced the thermastat, headgasket, they did the balance shaft eliminator,new water pump, and they are charging me 500 for a center force clutch the one with the 2100lb pressure plate lighten flywheel etc. the install is 750. so 750+500+1100=2350,is that a good price? and what can i expect to fee a gain in? should i be faster?is it worth the money?