351W Edelbrock Performer RPM package. Top End Kit is designed for 1969-95 Small-Block Ford 351W V-8 engines. 450+ horsepower. Edelbrock part #2090 Performer RPM Top End Kit is designed for 1969-95 Small-Block Ford 351W V-8 engines. This Top End Kit produced 451 HP & 433 TQ on a 351W c.i.d engine with 9.5:1 compression. The kit delivers improved performance in street applications from 1,500 to 6,500 rpm range. To get great performance out of any engine, all of the components must work together. The Edelbrock Total Power Package system has solved the parts matching puzzle for many street performance enthusiasts. With the introduction our Power Package Top End Kits, now you can get the best Edelbrock performance in-one-box, under one part number with “no guesswork” involved.