The rear spoiler was made up from a couple of strips of plastic sheet. I considered using the one that came in the Skyline kit but it was just too hard to make it fit.
The non-existance of the shut lines on the hood was bugging me so I got the panel scriber out and started cutting some but ended up going mad and cutting the hood open instead!

Now I'd really made some work for myself since this kit has no detail underneath whatsoever. Any how to cut a long story short I went through some other kits until I found a chassis that was close... here you can see it in place and the now opened hood...
The chassis comes out of a Revell BRE Datsun 510 kit and with a little trimming at the rear slotted right in. Here you can see the fit at the rear. The suspension there is from a Tamiya KPGC10 Skyline kit. It's actually the same suspension more or less as the 510 on the Tamiya kit is more detailed...
However, while the rear end is all sweet the front end is totally wrong

Not only it the chassis way too short but the strut towers are too far back to align the suspension with the wheel arches AND the inner wings aren't tall enough to reach the tops of the fenders... more plastic sheet coming up