Vauxhall Nova (Clutch/transmission/brake?) issues

[devilhenge]

So Im trying to fix up a Nova in my garage, and I have the engine running somewhat well, but I cannot get the car to move. I can start the engine, put the clutch down, put it into gear, but when I try to let off the clutch, it dies, no matter how much I rev it. The car does not noticeably move forward at all. The choke is on, as I cannot keep the car running long enough to get the engine to the point where it can run with the choke off, due to fumes. The exhaust is split, and before the split there is a minor kink, where the exhaust has been bent. The rear drum brakes are jammed on, but I believe that the front are fine (got them turning). (Just trying to give as much info as possible cause there's a fair few issues that may or may not make a difference). Anyone know why there is no movement/why the engine dies?

[devilhenge]

There is a good chance the engine isn't powerful enough (50HP when new, and its not in a great state as it is). Its OK to free rev in neutral and before it dies. Don't think the clutch is biting before it dies, though I may be wrong (haven't driven in a while)