Three other options:
1. Replace the OEM tensioners with CYCO tensioner, new roller/ball bearings, replace relief valve spring with Baisley piece, new cams and, depending on how the oil pump looks, maybe replace pump internals.
2. Retain the OEM cam plate/pump, new roller/ball bearings, replace relief valve spring with Baisley piece and install gear drive with the new cams. Check crank runout first.
2. Since you are replacing cams, go with the 25282-11 cam plate/pump kit but will need to replace cams with conversion cams. You will alsos need roller chains, spacer kit, tensioners and drive sprockets to complete the conversion.
Of course upgrade those inner cam bearings while you at it. Just a matter of what you want to achieve and how much you want to spend.