Engine on subframe back into body

I have to admit it, but I have been beaten by this.I have spent all afternoon trying to lower the body back onto subframe and engine. It came out with a little help from gravity but there is no way is it going back the same way.
It does not help that I built a new front panel and wings round the subframe and the the front panel was new so it will be MK3.
I can achieve every angle possible with the front body on a winch through the windscreen appature and rear on 24'' trolley jacks but the sub frame is at least 3/4 '' longer than the hole it needs to go in.

To make it worse I have done this before on a mates 78 van with no problems

Any Ideas anyone

where doesn't it fit? i once had a problem re-fitting the tower bolts on my car and only solved it by pushing the car close to a wall, putting handbrake on and using a bottle jack and long bar against the wall to push subframe tower back against the car to get bolt holes to line up.

hopefully a little fettling will get it in - brute force and ignorance can be great sometimes!