You'll need to move your fuel filter from the shock tower to the front fender as the intake tube is a tight fit. You'll have to replace the fuel line with a longer piece but it's not a bad idea on an'81 and especially if you're planning to run bio. Even though you've disabled the blow off valve, you'll still need to run the hose or you will have a big hole. The waste gate should go off @15 psi and will give you a little more oomph. I'm running a K&N filter on the end of my intake hose and it 's working good. Resist the urge to clean things up by cutting a hole and running some flex pipe to the cowl area; the noise is deafening. Please invest in a decent down pipe. Build one or buy one. 2.5" is a good size. 3" is a ground dragger. The stock cast iron piece is a joke and the old NA system is a crime. My engine has the oil sensor on the head. I tapped into the second port on the filter adapter for a mechanical gauge. You might consider using a ford oil filter as the clearance to the frame is really tight with the cooler installed. It's the standard PH8-A (fram#) filter. there's also the PH 16 which is a shorter version. Some brands of the V-Dub filter are quite long & could rub. Very happy that I decided to go with a turbo in my caddy. A cop let me go for doing 76 as he couldn't believe that I could actually do it. (I've had it to 95).
[quote author=R.O.R-2.0 link=topic=27779.msg228265#msg228265 date=1292264376i had rain-tray induction on my 81 rabbit.. i loved the sound at idle.. that was the only time i could hear it..
no problem sucking in water with that intake?