[racingdwarf]

looks like a cougar transmission drive shafts wishbones, rear tower mount looks home made, schumacher shocks, not sure about the front end, looks a bit rc10 ish with a few bits thrown in???? don't recognise the front wishbones
The chassis looks to me as if it were made for an RC10 of the time, but never ran or got close to an ultima so the above may well be right. It looks at the back as if they cut the back off of a cougar chassis then attached it to this chassis

Back in the day when I raced at EPO we did used to put a lot of the RC10 front end on the cougar, can't for the life of me remember why

Quite a bit of this used to go on in the 80's was quite fun really, loads of people would experiment with all sorts of layout and strange cross breed creations with loads of home made parts