well the hardest well that 2 me is the wiring but my mate ste does that i get most of it done then he does the soldering and workings of the central locking and lights etc other than that its just converting things like the rear suspension to lower it and fit the rear discs hubs top rear axle,the seat fitments making the exhaust and moddifing quite alot but the engine,front suspension brake servo abs all bolts into place the second time was easier due to knowin what i had to do and worked it around doing other things