No problem(searching), if you have a question, just ask. Most 350 driven clutches are siezed/rusted on after all these years if they have never been off before.
Alot of people have had luck with just super penetrants like Liq Wrench, PB Blaster, Kroil(my favorite by far). Spray it in both ends of the shaft and let it soak in at least 24hrs before attempting removal.
Heating it with a hand torch also helps. Air hammers, hand hammers and other physical banging is not good on the tranny case, shaft or bearings, in my opinion(IMO). So avoid these.
I have seen people chip,chunck and saw them to pieces getting them off, but save that as a very last resort.
This is the method I use and it has worked every time I have tried it(several). Pre-soak the shaft on both ends with Kroil. There are three small smooth holes in the hub of the driven, I drill and tap these holes to fit a heli-coil. Be sure not to go all the way thru the clutch face. There is a small open pocket about 3/8 of an inch in, you will see it. Stop drilling there. Tap the holes to fit what ever helicoil you are using and insert helicoil. Do not try a tiny heli coil, not enough bite in aluminium. Next, attach a three legged puller(steering wheel/harmonic balancer puller) and start turning. Be sure all screws are level before applying torque. Its always worked for me.
When its off, be sure to polish up the shaft with some emmory cloth and apply some kind of anti seize before adding the new clutch. I have some pictures of this procedure, but I will have to find them.
Good luck, and post back!