I received a valvebody with an unknown shiftkit.

I first thought it's a TF-2 but it doesn't have the stronger pressure regulator spring. BUT what I could see:

The throttle piston was cut down as on the TF-2 kit and also the spring is different. I set the endplay as written in the old TF-2 instructions with the big drill bit between cam lever and stop.

The 1-2 shift passage has the big drill hole and the ball is missing, both like on the TF-2 kit.

BUT the rest seems to be original and as said, the pressure regulator spring SEEMS to be original.

Now my question: is that a TF-1 kit? If yes, anyone got the instructions or what line pressure settings should I use here? Factory settings?

thank you