2TG oil pump types

[71TA22]

Ex Toyota NZ backed rally car?

[Mr Revhead]

nope not one of those ones, a fresh import road car

[TTECelica]

i have a 2tg with some larger cams and it is apparently it runs at a low oil pressure, i have not run the engine yet. Fairly sure it is just the oil pump is not delivering enough oil for the revs? I had a search and found most people are saying that all t series oil pumps should be interchangeable. so if i get a 3tgte oil pump i should solve my problem as they have a higher capacity pump. If i do this, would it be advised that i run a bit more oil in the sump?
Catchya, Josh

[parrot]

I have a parts book from Oct 1975 if it may help TA23 RA23 TA28 RA28