We`ve been working with those arms for many years,since they were Pole Position arms. We also do a lot of design and consulting work with SPC and in fact designed many of their street arms,the whole Corvette line etc. SPC has been around for about 50 years so they`re no johnny come lately. The SPC arms have been around for over 10 years also and are very popular in road racign and circle trace. It`s just in the last few years that we`ve brought them to the street. They`re great pieces to work with because they`re fully adjustable,don`t need shims and because they`re modular they can be configured to fit and work well on almost any car and suspension set up. BUT because they`re modular there are also many different versions and they can be configured to
not fit and work well on almost any application as well.

As a result the majority of the SPC arms we sell are non cataloged versions made just for us. The versions that Jegs and Summit carry are not the best match for most cars. They were an attempt to make a "one size fits all" application for stock muscle cars. We tested the originals prototypes for SPC some years ago and let`s just say you won`t find those part numbers in our inventory.... We also sell retrofit kits to change them to a more useful configuration.

The best news is that the arms that fit and work better especially on PT cars cost less than the ones sold by Jegs and Summit so it`s win/win. Bear in mind that the only reason the SPC arms are less expensive than a lot of the other arms on the market is their efficient modular construction. In other words they`re less expensive,not
cheaper. This adj. construction also gives them a big edge in adjustability over all the other arms in the PT market. If you want to really redefine the way your car performs you can use them as part of a StreetComp package and correct the lousy stock front end geometry while you`re at it. Do a few searches here and on PT.com and you`ll find a lot more info or just give us a call. Mark SC&C