do I need any type of spacer?

 

no if you get the GM shorties you dont need spacers

 

Can you get the shorties at 60 lb/hr? I have only seen the 8.1 Marine at 42 - 44 lb/hr. I just ordered some from Fuel Injector Connection and they are LS2 with adapters and I will have to shim them with some washers or something and probably need longer bolts. Jon claims they are a much better injector.

 

There should be no MPG difference as the injectors that flow more are just pulsed less to maintain the same a/f.

Yes you can with no pigtails/adapters needed. Just drop them in change your IFR and your pretty much done. No need to adjust PW min/max, dead times etc.

 

Def a badass injector, made life much easier

 

Sounds to me like you should contact SRT10KLLR. His solution will definitely be easy to tune and ease the install process. As near to Plug and Play as it gets.

 

my IDC last night was at 95%, on the 42's, I may get a set also sometime