I've been looking for a new "toy" & I just wanted to introduce myself. Been looking for the right one for a few years but I keep coming back to a 85-ish 300X. I'm, well, older now (42) & have had a lot of fun toys but really miss my 1985 Z. Seriously, had a dream that it was hidden in the garage & I was so happy to find it again

I've been a mod on two other message boards so I know the first step is to find a good message board & this seems to be the best! I want to pick your brains for a second if you dont mind.
What are the problem areas I should look into? Mine was bad in the rear control arm/frame area, this is common right? Reading here it seems the rear half of the car is subject to rust (tirewell, behind the tail lights).
Electronics? They are loaded with them but seem to hold out over the years from what I've looked at. What would be a deal killer here?
1984 50th...Keep looking or not worth it?
Future mods. I'd love to do a LS1/Megasquirt injection swap with some crazy intake setup - dual throttle bodies or something like that (sorry!). What about the rest of the chassis? How much could a stock rear end handle, is there a easy swap here? What about chassis flex, not against putting a rollcage in it but that takes a lot of fun out of a driver. The LS1 swap would be further down the road, just an idea. I'd be ok with a good turbo 3.0 with some tweaks for a little while.
Parts. OK, you got me, where? Say I need a new dashpad or a turn signal switch-where do I get that at? Rock Auto has a good selection of stock parts but what if I want something like a door panel?
I have a ton of questions, just looking for some thoughts. What I've found semi-locally is around $4k for decent looking cars. I'd like the turbo again, but ok with a N/A considering my plans.
Thanks all & great forum!
