easy and yep no problem. only issue is the backreast angle adjust knob is on the wrong side.
1st off pop off the 2 plastic trims, look close and you'll see 3 pegs, push them thru and the trims come off. next tilt the backrest forward, you'll see 2 hooks right at the base of the seet release those and tilt the seat. Then just release the clip on either side that the backrest pivots on, and youre done!
Just be aware pre & post 90 seats are slightly different so make sure the donor seat is the same as whats fitted
