Eh not bad honestly. Take it to any competent audio shop and they’d be able to figure it out. I personally did the work myself on this truck and its a pain in the ass. It cost about $2,500 total from thinking about the idea to actually sitting and blasting bass into my ears. It also took many hours of my days for a month, where I ultimately needed a professional audio shop. However, knowing what I know should shave at least 1/4th of those costs. If you’re that interested let me know….BUT if you don’t care about sound quality and “all ahh datt”, it can be done for $500 or so. I wanted my box to look super factory to the LR4. I hate when people “rice” the crap out of these trucks. It’s a prestigious “British” vehicle that is both beautiful/rugged as hell. I’d hate for someone to be around my trunk and say “wow what a big ghetto 1990’s looking box in a bright ass beige interior of a range rover?”. Cmon people….we’d all feel that HAHA.