I thought the engine is called L03 ?
For what i´ve heard the biggest problems of the 5.0 TBI is the restrictive intake and exhaust. A good exhaust is too expensive for me but the intake is easy to tune...
The TBI spacer is cheap and i can tell you in a few day´s how much it´s worth...
I´ll be on the test bench next week and again after intake mod and final tbi spacer installation...
Here are some links:
343 hp from the 305:
http://www.goingfaster.com/spo/343hp305.html
At least for you us-guys emission legal tuning:
http://www.hioutput.com/tech/290hp/290hp.html (exhaust-tips...)
Great parts for the TBI:
http://www.turbocity.com/TBIPowerMain.htm
And this is the best one:
http://www.thirdgen.org
There´s a thread called "the ultimate tbi" - that really kicks, i´ll do some of the mods.
Because of the german tüv i´ll concentrate on the not so visible mods...
Tell us what you´ve done...