I just installed a RobbMc starter on my Barracuda 400 B engine. So far it starts fine and fits well with my 1-3/4" TTI full length headers. The only downsides are 1) the grinding of the block that is required with the new design (B/RB engines) and 2) having to install a relay for the start circuit. If you are using the OE starter, you have to install a diode- that is included with the starter. HTH, Steve