tow bar troubles

i got a towbar off of a mate of mine over 6 months ago and tryed to fit it. it came off of a toyota hilux exactly the same as mine but after an hour of struggling to get bolts out and putting it into place discovered that the bolts that hold it to the chassis werent long enough so we put the bumper back on, and gave up. these bolts have to go through the towbar bumper and chassis but were only the right length to go through the bumper into the chassis. ive spent many months trying to find the right ones. i recently downloaded the instructions for fitting this towbar and to my suprise im not only missing the bolts but several spacers for the bumper and that have to be slotted into the chassis for structual support i believe.. what a problem huh........