the check valve on the drive is fine. the one on the bellhousing was missing when i got the boat. id like to fix it.
Are the part numbers the same for both drive check valve and seal and spring as the bellhousing one???

Yes they are.

Drive parts 11-12-13
http://www.perfprotech.com/store/ass....aspx#assembly

Bell Housing parts 7-8-9
http://www.perfprotech.com/store/ass....aspx#assembly

You will probably want to get the seal, part number 2 for the bell housing also.

I'd buy 2 seals as unless the two surfaces (drive and helmet) are parrelell, it's very easy to bend the seal. If it's bent, it will leak.

so i did order the right parts. you must have to hold the bell housing up in tilt mode to but them in from the backside?

Yeah easy to nick that seal while putting the drive on. I used to keep a couple extras around, rub a little grease on it as well to keep it from ripping and help it seal.