Engine Making Sure I'm Not Missing Anything

In the past I've had lots of problems with strait forward installs, I blame myself for not being prepaired.
So I thought I would post and see if I'm missing something or if there are others thing I could or should do while I have the engine out. So far Ive ordered heads, valve springs, and felpro head gaskets and headers. I'll link them in case I've made any mistakes.
http://www.summitracing.com/parts/fms-m-9430-p50/media/images
http://www.alexsparts.com/sb-ford-gt40-drop-in-valve-spring-kit-hyd-roller/
http://shop.advanceautoparts.com/we...asket-felpro_5722683-p?searchTerm=head+gasket
http://www.ebay.com/itm/271159493423?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

I plan to replace my old modified automatic bell housing plate with a new manual one. I also have new intake gaskets, injector O-rings, oil and coolent. I'm pulling the engine because I think some of this for instance the bell housing plate will be easier with it out and I'd like to clean up the engine bay hide my injector harness and maybe do some painting.

I have the following things installed TS TFS-51403001 cam, gt40 intakes, offroad x-pipe, and a bunch of other non relevant things. Thnx for any advice or tips on anything else that would be good to do at this time or anything I'm missing.

smilts said:

I'm pulling the engine because I think some of this for instance the bell housing plate will be easier with it out and I'd like to clean up the engine bay hide my injector harness and maybe do some painting.

Click to expand...

Yea the can do stuff I'm looking for as well thank you. The rear seal has less than 6 months of driving on it, is it still worth replacing? But I will be checking for oil leaks and doing a lot of cleaning.

As far as rockers will the stock ones work or is it better to replace them while I'm doing all of this?

After actualy talking to Alex today I bought these valve springs.
http://www.alexsparts.com/sb-ford-gt40p-e7-drop-in-valve-spring-kit-hyd-roller/

If anyone happens to take a look at this. Do I need to use different spark plugs, also do I need 90 degree spark plug boots for my wires with the new heads and headers?