Evan

I think it were mine is get a pressure gauge and see how much pressure it has on accumulator port. If it's holding 90-105lbs at wide open throttle then is adjust pressure so it's 120ish. This is easy to do and will make the clutches hold better. Mine had 270k clutches could have been coaxed for another year or so but my second gear band was gone. I finally ran put of adjustment on it and lost second. My tongue converter was also done. If truck is still driving and shifting through the years well bump g pressure will make the all the clutches hold better I to run cooler and last longer. The transgo shift lit will be in 150lbs ballpark set up on mild side. It wouldn't surprise me if the old seals can't hold that pressure. I'd really do lots of research on doing shift kit on a high mileage tranny. You may also consider running tractor transmission fluid. Or 50/50

How many miles on it. If it's high mileage it may not take well to increased pressures the transgo kit will make. I'd drill passages to the middle of what transgi recommends. Call them they will be able to help out a lot. You can always drill ports bigger so don't go extreme to start. My tranny is fresh with diesel transgo kit and is amazing. I have all billett upgrades and am running 150pressure at wide open and 90 at idle. I actually had builder build my trans mission and it's pretty night and day from stock.

Sac is what I did.

I have the same set up Installed it 5 or 6 years ago. I replaced the intake dodge retrofit kit. Mines had no issues over the years. I have a mechanical gauge keeping taps on it. Gauge reading pressure at elbo going into vp44. I'm running big line all the way to it. One of best mods I've done