How reliable are snout extensions for the fuel pump?

What was the last year the cams had snouts . Im picking up a 91 360 tomorrow that is TBI but maybe they retained the old cam cores without mechanical fuel pump .
it's a real roll of the dice. likelihood is that it doesn't as that they were phasing them out by/around 87, and with it being TBI it would need hi pressure feed (i'm assuming).

rollers w/ snouts are rare as rocking horse ****