This is my current head.I paid a bit more than 300 bucks for a valve job, port/polish, and valve job. I would imagine a valve job and resurface to be no less than a $150 procedure. You'd be better off just putting the work into your current head if you have one.
sorry, i am new here. what is the different between BP4W and BP05? how much BP4w cost more? do they both fit my 99 miata?you understand that's a bp4w head right? out of a 99-00 miata. best flowing head for the bp. 300 plus shipping is actually not too bad even if the head is disassembled. 350 will get you a rebuilt head off ebay, but that's for the regular bp05. a rebuilt bp4w will cost you about 430 for a rebuilt head. keep in mind, this means sending in your current head as a core, which I'm not sure if yours, being broken like that, will qualify
EDIT: just saw your info and you've got a 99. so yeah... I wonder how much it would cost to just get that part of the head rewelded at a machine shop