are stage 2 cars very trouble some or are they ok. or are they a pain in the a-- and a big expense. looking at getting one just to have. and maybe race once a year, 1/8 mile rest of the time look at and cruise a bit.
Not if done right... Should be able to run lower boost to make the same power... I know of several SII's street motors that have been together for a long time.... The initial price will be higher than a 109 build but the benefits should outway the cost if looking a long term thing...
It all depends on how you cam it. I've got fully ported Chapman heads with epoxy-raised ports, and my power band starts around 3300. What's wrong with that?
Same with fuel. I can still get around 20 mpg if I keep it 65 mph or slower, and that's with 96 pph injectors.