It's a joy to fit, oh yes
You can unbolt the slam panel, you need to undo some of the bolts holding the bonnet latch and then there are 4 x 10mm bolts holding the panel itself (two either end, one on top and one on the front).
Depending on how similar the Mk1 and Mk2 are, you might have to drill out some holes in the panel and the intercooler, the fitting instructions I got many moons ago were ok to a point, then totally useless. Did you get slimline fans with the kit
, Pace supplied a large one and a small one to fit onto the radiator as the originals are too big to fit into the gap once the intercooler is in...