Hate to say it but "budget" and "hemi swap" are usually not spoken in the same sentence. Yes it can be done "cheaper" but still is not what many would call cheap. The one thing I can tell you is that going cheap will bite you hard later on. Not saying you need to buy everything brand new or get the best that is out there but I am saying that you need to invest in quality in the right places like the controller, harness, motor mounts, exhaust manifolds/headers, etc. Anything can be done relatively cheaply but if in the end you have a car that is not reliable, undrivable, etc. it sucks.