Which vendor sells the fuel tank drain kit??

Just use the Schrader valve one the fuel rail. A -4 AN hose screws right on, or use a piece of rubber line. That’s how I’ve done/do it.
Then power up the fuel pump test lead behind the alt with some power from the alt or underhood light & bingo tank is draining.
go to grainger and get an A/C recharge line. This will also press the schrader valve and make it very easy.

I think the A/C hoses available today won't work. They have some kind of EPA friendly anti-reversion fittings :mad: so freon in the hose won't vent to atmosphere. Either get an older type hose, or you could just cut off the fitting on the far end. For test purposes only!:cool: