Hi Adrian
welcome to the forums, first off as I always say an ae86 will not find you , you have to find it, start looking everywhere for them , because most of the times the cheap ones will be gone straight away and most of them will be brought by members that are also looking for them. As the years go on they are only getting rarer and more sort after.
If you have no money start saving because these days a stock adm ae86 will cost you upwards of 2k+ and thats for a shit one which will be rusty. Realistically I would say start looking for a ae71/ke70 as it will probably be a much better alternative for thoughs who do not have money, as well ae86 parts are pretty expensive so modify one will not be a cheap thing to do,if anything a s13 would be cheaper to modify.
good luck with the search