The utes are about 800 to 900 kgs so it's not like you are trying to move 1500 kgs as you would with a large HQ or XY , because of this advantage you can get away lighter components and keep them alive, if you want to use the McDonald bits it will be cheaper to buy their "kit" to get all the hardware but then it will take the fabricator longer to adapt it to your application , so from a cost point of view it's 50/50 which way you go . There will be a fair bit of fab work to be done on your chassis anyway because they are built so light you just about have to put a rear chassis clip in it anyway . So there is a few hours of labour there + materials , you would have to budget for at least 1.5 to 2k to do a nice job