With oversized tensioner since the gatorback belt the previous owner put on it is still good. My supporting mods will be a 180 drilled t-stat and NGK TR55'* gapped at .58. Sound good? I only have SINGLE exaust, I don't know if thats a problem. Its a pretty strait shot from the manifold to the mufflar.

With just a 3.5 you should be alright.

SSEi exhaust is just a single pipe until the muffler. Yours will flow the same.

No 3.4?

The guys on clup gp said the 3.5 would be better with just a gutted air box. I know i'm a traitor. They just have soooo many L67 ser 2s on that site its not even funny.

Gap those plugs at .055".

I got the 3.5 on my ssei. It really woke my car up. You will still gain 20hp maybe a hair more, from that mod alone. The torque should be around 25-50ft lbs depending.

Depends on the year. 00+ split before both mufflers.

Every car is different and you should scan the car for KR but I think a 3.4 would have been a safe bet.

Just got it today. However, I had to hide it so I can't see it because the temptation it great. I MUST run my car at the track first to test my bottom line.

First mod I did was a 3.4. Heck, I didn't know they made a 3.5!

Hehe, you learn a lot at clubgp about the ser 2 L67. A member there has a GTP with a 3.5, 180T- stat, and U-bend delete and runs a 13.6@ 102mph!!!!! He had similar dyno #'* to me stock.