The best way to describe the fit and finish for the parts is probably "variable", some parts are pretty good, some are average and some like the C-pillar extension are pretty poor. As with most things in life, I think you get what you pay for. The main thing for me is that they are fairly accuratedly detailed to the originals and they are light. No point changing to FRP panels if they are 3mm thick and weigh the same as steel panels.
The edge profile of the M3 inner guard is pretty different to that of the standard E30, not just a case of cutting it off and moving it out 20mm as I was hoping. So rather than try to fabricate a modification I have ordered a pair of outer-inner guards for an M3 which should be pretty easy to fit up, and then give a more accurate position to fit the outer guard up against.
So whilst I am waiting for those to arrive, I have started fiddling around with other bits and pieces, including the front lip spoiler / splitter. The supplied part was just a single upper skin that was far too flexible to be any use, so I added a bottom skin from a sheet of aluminium composite and used some expanding polyurethane foam to fill the gap between the two and bond it all together. A bit of old carbon-fibre look wrap on the top and it almost looks like a bought one!!
Worked out a slotting fixing system so it can be moved in or out as required for more or less front grip similar to the M3 Sport Evolution. As it has a reasonable thickness I was able to shape the front to act like a proper splitter and should have some proper aero effect, rather than just looks. Here it is in the fully extended position..
One part finished, just fifteen to go..