The popular tire is the michelin Primacy MXV4. It is up to you thoufg, Price range and preferable name brand etc... Check out www.tirerack.com and do a tire comparison. That will get you in the ballpark. B)
Did you make this up as you went along, or did the folks at Area 51 send it to you? "piston tdc algorithm" Really? "silent death"? From engine ninjas?
SRK, I just had to, Too funny.................
Alright sweet.. Synthetic it is.. I'm still confused on gear oil and differential oil.. Is is the same?.. Will I need both these liquids for the tune up on the manual transmission..
Gear oil is for the rear differential, Transmission is for the gearbox. They are 2 different liquids.
If the lugs are torqued to spec and there is no rubbing your in good shape. Are the gs400 wheels stock ? Going from 15's to 16's should give you more room.
If the car never had a cd changer in the trunk check behind the trunk liner for factory harness in the passenger side rear wheelwell and/or behind the back seat on the same side. If it is prewired from the factory your in business. If not I can get you a custom made better than factory wiring harness made to order. Keep us informed. It will look something like this: