Thanks lads,
As for going the other way - EA ghia into the ED - front right side as you are looking at the car. Strut tower area is right in and up against the plenum and so forth. Radiator area, lights and everything in that area are completely gone or definitely not salvagable. Translated - if I had a front cut - yes. Without it - big probs.
Good idea though if it was possible - the extra body rigidty of the ED over the EA would be a nice bonus.
As for the other post - it is a Series 1 - so it is the ol mechanical 3 speed. Even with the 2.77 diff - she rides along at around 2700 - 2800 revs (far too high) on the highway at 115 to 120 clicks; one of the big reason for changing the box. Looked at a T5 to drop in - but more trouble that it is worth - unless I could find it on the donor car. Not impossible but hard. Other big reason for the change is I have 350 thou on the EA - only 100 thou on the ED.
Yes - need to do the rotors and so forth - need a regrind at best; at that age they may be getting a little low. Will keep the calipers in reserve though come to think of it.
As for the cats - good to see the feedback on this. I was suprised at the guys who do it in the US, and was really just throwing it out there. Glad to see people replying to this are not vandals. Haven't heard anyone doing it here (as in physically hear the exhaust note) - so to hear from one of you that it sounds like sh.. helps also.
As for the rear end and other probs - Springs and shocks are under 2 years old. Brake pads were done 12 months ago and a few other things like urethane bushes on most things. The tyres are less than 2 months old as well (225/60's). So the only thing I had left on the list for the rear end was the rotors needed machining or the dreaded fact the axle had started to go - know two others in the last couple of years who had this problem.
Speaking of the diff - seeing as I drive a lot of highway clicks - would the 2.77 diff setting still be okay with the 4spd slush-box - or would it really be that slow?? Remember, I ain't looking for a "straight line tyre chewer" - just something with a bit of poke, nice exhaust note - and big long legs on the highway. Legs on the highway is very important :).
Thanks for the info on the carrier for the LSD as well - like most things - something that hadn't cossed my mind. Anyone with experince on doing this??
Thanks for the advice one and all - got 'worried' when the first one I saw was the signature that said something about the "size of a man is the size of his toys" or something like that. I thought great - here I go getting beaten up by the guys with 8 cans instead of me with 6

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Later good people - anyone with any foreseeable problems for me to avoid or overcome - feel free to add.