I am currently building a 2wd Escos road car as i much prefer 2wd...
As to handling,it`s just a short wheelbase saffy with better weight distribution so it should drive and handle every bit as good as a saffy..
Everything from 2wd saffy is straight bolt on,the only differences being the propshaft length(plenty of companies to sort this)and you will have to fabricate a gearbox mount...
Don`t listen to all the bullshit merchants,2wd escos`s are a piece of piss to build and drive great,feel free to PM me for any info or advice mate...