I'd say 4 hours to pull the head, another 4 hours to install the head and a bunch of time scraping off old gaskets and cleaning and such.

This tool is invaluable for removing timing chain guide pins -

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=350384215783

This set of bits will work on the head bolts -

http://www.toolking.com/performance-w1395-4-piece-metric-12-point-bit-triple-square-bit-set

Costs about twice that at Autozone. Not the best quality but they'll replace the set if you break a bit.

The short bit means you have to remove the cam for full access to the head bolts. There's a longer bit special tool but I can't see myself handling a head with valves open. That's an expensive accident waiting to happen for a klutz like me.

I don't know if special tools are needed for the intake manifold. I imagine some 6mm allen keys and bits and some ingenuity will get it done.

Any other tool you need should be available at an auto parts store.

Don't forget a copy of the FSM.

Sixto
87 300D