Just doing a little mental masturbation over a posible new project at the moment, nothing ground braking but will need a 6 point cage.
I have done a trawl with the search function and found not very much info, so i ask my knowledgeable exige kin for tips.
who supplies cages to buy, and also to get fitted. I will have a bare chassis so a self fit is on the cards if the price for fitting is silly. i would rather the cages which tie into the cross member rather than butting onto the sill. i have got some good info from Plans, who offer only fitted cages, pricey but top draw product and f.i.a. certified.
I have spent a lot of time investigating the various offerings for my mk1. For me it comes down to the Hoffman or Safety Devices one, both connect to cross member. I will probably go with SD one as they can supply fia certified one and I know fit is very good.