I swapped a VQ35DE into a 1980 280ZX and I was able to keep the stock steering system but now I'm trying to find a pump to work. The VQ35DE pump obviously bolts right up but the maximum pressure is 1390-1480 PSI, and according to the FSM the 1980 280ZX power steering pump is 953-1123 PSI. So if I use the VQ35DE pump the steering box will see a higher pressure than it would normally see (up to 350 PSI more). I would assume this would cause premature wear, but I don't know how much.

When you guys do a swap (i.e. V8, RB swap), what power steering pump do you use if you have power steering?