Hi, I'm new, dont have a car as yet, hoping to get a corsa B (3 door, 1.4 8v at a minimum) by end of may, run it for 6 months or so, and then get my dads mk3 astra. (97 R 1.6 8v LS 5 door, 40K miles)

basically for astra I want to make it a 5 door GSI replica, lowered, diff alloys, from exterior point of view. only big interior mod is mk4 interior retrimmed in leather.
questions basically are, I've been told there isnt a irmscher grille for the mk3, so is it possible to retro fit 1 from another model and if so which model. also, will the mk4 interior fit straight in.