project help

Does anyone know what's involved or if it is possible to put early kz650 or 900 ductal and tank on an e model 1980 I think I bought 4 basket cases hoping to come out with a car 650 and an ltd 750 to sell and want to build the kz650 e with a 750 top end into a z1 900 kz650 style clone how should I refer to these bikes for clarification I bought a 650 ltd a 650 CSR a ltd750 and a 750 spectre .will the igniter rotor from the csr650 fit the ltd 750?I am brand new to kawaskis I know nothing I liked the old 900s in high school but couldn't afford one.Still can.t so I want to build something similar on a budget all input is appreciated except for buy a 900 I make 14k a year raising my son on my own the only reason I can do this is because I got a smoking deal on all 4 bikes