Quoting LIV4PSI:
^^^Yes, the 1g sending units are too long to fit inside a GVR4 tank
Also I was at the yard this morning and I saw 90-93 gallants their tanks were under the rear seat with the S.U. mounted on the side vertically , like the 1g. There was a couple of 2g, theirs were under the seat as well but the S.U. was on top of the tank. So is the gvr4 S.U. exclusive just to the gvr4's?