part locator (part search) for vehicle part opencart 1.5.5.1 website

I have a client website for a vehicle dismantlers at [login to view URL] which is in opencart 1.5.5.1, it is in the process of going live, what I need is a vehicle parts search function similar to [login to view URL] I DO NOT NEED THE enter reg/vehicle registration number bit, just need the following: Select Manufacturer Select Model Select Vehicle Select Part Type/group then a search button, after this is achieved if you could also instruct me in detail AND PLAIN ENGLIST the steps to adding manufacturer, model, vehicle and part type then how to add products to this so it is functional? I know there is a Mod that will do this so if this will work then just install this so long as it works similar to [login to view URL] with a search button then I will be happy, will still need CLEAR instructions on the above already mentioned, this needs doing very quickly please so if you are already busy and cannot reliably fit it in then please do not bid, also this is only one mod that needs to work so budget is not very high, finally please note that VQMOD is already installed and working, many thanks for looking