ok so i've got an rb30/26 and just bought greddy oil cooler kit with the grex thermostate and im not running the relocater kit, i have it all fitted but my z145 is to wide hits where the angle come out of the thermostate for the fittings, thread is right but the filter is just to wide, what i want to know i read that a z445 oil filter is a bit smaller filter, can i use this filter on my motor? or anyone else had this problem or used a different filter, car is making over 500hp and dont want to have an oil problems with it...... thanx liam