stick seal for Caterpillar 307b

Hello all, been dormant for many years but this old Cat is bringing me out of hibernation. I need to purchase seals for the stick cylinder on this machine and finding parts for it seems a challenge at best. It is a 97 307b, does not have the swing boom, has a Mitsubishi motor and from what I understand is a Mitsubishi machine with yellow paint. Serial# is 4rw00185 and the number stamped in the cylinder is 1336762heo with the number 10sp7 stamped below that. The cylinder has a 60 mm piston rod. I have seen after market seals that look like they might work but thought perhaps someone else had been down this road and might know for sure. Thank You.