Andrew there is no jokking here!
( It's not allowed!)

But seriously it's not that heavy!
I remember the day I got an A15 and brought it home in the back of my Laser!
The bloke I got it off helped me put it in the back but when I got home no one else was around!
( So I had to lift it myself! man that was hard!)

You and your boys are firefighters so you should be stronger than me! ( You break down doors with axes all the time!
Trust me I have seen it on TV!)

Plus you said the car is a wreck so it doen't matter if you have a rest halfway and sit it on the radiator support!( But if you arent worried chop the front why not make it easier for yourself! Just don't tell these blokes you are chopping up a datto!)

And for the gearbox your on the right track!
I would just put the jack under it! then take out the engine! then bring the gearbox out the front! ( Unless you got the car high enough to bring it out the side!)
Either way dont forget to take the gearstick out first!