How the F do you get to the bell housing bolts?!

the head of the bolt is often in a recess in the housing that leaves a socket engaged only by a fraction of an inch due to its outer diamater being too big for the well that the bolt head is in.
a ring spanner or open ended would be ideal if the angle of access wasn't restricted by the bulkhead/ tunnel end.
normal socket has its drive profile recessed.

i get a cheap thin wall socket and linish its face flat, rubbish from the centre isle of the supermarket, use its extension and socket drive adapter as well. then use a collection of "proper"extensions
stick a wooden block between pan and steering cross link
lower the back end down so the wooden block is clamped. but leave the jack under the back trans mount. go in with jack from the side.

Make sure you don't bust anything off the firewall with the end of the heads keep in mind the brake pipe that runs across as well.

undo from below, head towards rear of car hugging the trans . easier access if clutch linkage and z bar is out first

pull trans safe in the knowledge that the engine aint going anywhere cos its tilted slightly on its front mounts and resting on its wooden block. if you use straps or slings for engine removal make sure you put them in place in the right place before you block off access with the bit of wood. not a problem with lifting plate and chain

Dave