the plugs in the head for a start
You could remove the plug and helicoil, head will want to come off to stop swarf though
Repair Spark Plug Hole Without Removing Cylinder Head.mpg - YouTube
Videos like that on youtube, just have a look and find one you can understand
Kits not much either although you could just buy a new head for £20 or in my case 99p
Expert M14 X 1.25 Spark Plug Helicoil Thread Repair Kit £56.18
Piston TDC a shop vac to suck drilling chips, re thread easy pezzy
garage will charge you a decent bit I'd think mate, may be worthwhile going for LZIR for a helping hand
Break it down for parts I'd say, wont get much for a V8 as whole looking at ebay prices
Head off then?