I made some for madcao, and im never doing this again, heres some pics, if you need advice shoot me a pm, made these with universal brackets i had laying around, harbor frieght welder and flat steel from lowes
the last photos on here is what i had started to make, once i set the seat on it, i didnt like the booster chair feeling so, i made my own version of super low down brackets, i got the seat as low as possible without cutting into the floor pan
it def takes the booster chair feeling out of the question, its cool i love seeing peoples fab work, suprised there is not more if it on here with all of the budget builds like mine, it is so much cheaper to make your own parts