[VintageUpgrades]

Most good SPF installers have already figured out the "finer points" that need to be addressed during the install. Every installer is different however. Some use better parts than others (mounts, fittings, hoses, wiring, etc). Example; rubber engine mounts might damage the body around the sidepipe exit over time, poly mounts usually do not. This is only one example of many that can cause dissatisfaction to a new SPF (or any other manuf) owner. In the years we have been doing this, there have only been a small handfull of issues that concerned the factory, and all were resolved by the time the car was delivered.

WDZ, you beat me to the punch.