I prefer to deal with Mancini or Nick at www.compu-flow.com for my engine needs. I drive past Summit every day but I never order anything from them for my drivetrain
Tires and wheels are about the only thing they are good for IMHO
Gus

8045538-savoyburnout.jpg (36 downloads)
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60