Hello all, new to this forum. Glad I found it; hoping to get some advice. I bought my 1964 Skylark about 5 years ago. It has the stock 300/2bl and switch pitch trans. Car has milage; odo shows 45k, so I assume the car has 145k on it. Been happily driving the family around in it for years, but recently the motor has been showing signs of being tired..smokes, lack of power, valve noise, etc. I have a chevy 350/TH350 that only has around 10k miles on it just sitting in my garage. Tree fell on the donor car years ago, and I yanked the motor/trans for a rainy day. Motor has been done right with hardened valve seats, mild cam, nice pistons, etc. I'm trying to gage how difficult it would be to swap the 300/switch pitch out for the 350/350. It would be really nice to have the aftermarket availability in parts for my car. If I could do it for minimal cost, might be worth it to pull the trigger and use the good motor/trans I already have. Thinking it would save me a lot of money down the road too. Any recommendations or advise would be greatly appreciated. I've attached a few pics of my car.