Cerberus 
So i just got an '04 GP GTP. I previously had '98 Buick Riviera which had effectively the same drivetrain with the series II SuperCharged 3800.
I put a 180° T-stat in it (the Riv) and opened up the baffling in the airbox to let it breathe better and let the whine out, drove it for 85,000 miles of regular full throttle romps, and sold it for half of what i bought it for.. but i loved that car.
So i figured I'd find another Supercharged 3800 and I did.
Is there any known issue with installing a 180° t-stat in these?
on the Riv it would throw a low coolant warning since the low temp of the coolant confused the computer.
Someone did a resonator delete mod on this car which is fine, it sounds good at idle but a bit ratty when stomping on it, but whatever, its all good.
For the record, I was doing 10-12K oil changes with Mobil 1 15w-50 (Red Cap)* and Purolator Pure One filters, and it was still running like a top at 205,000 when i sold it, and i plan to do the same intervals on this engine, though with somewhat lighter oil.
I found a Wix cross reference page and did a screen capture, but i don't know what I have for clearance, or more properly, what is the largest dimension diameter and length that will without hitting things..
I would like to find a cross ref for a slightly longer and fatter filter (more media surface area) that will fit without issues if anyone has that info kicking around..
So anyway, Thats my bit.
*(yes, i know that is ridiculously heavy oil relative to spec, but i had a remote car starter and gave it 5 minutes of warm up before i even got in the car every day)
