The spinnaker block/pulley (both words mean basically the same thing, although sailors usually use 'block' for some reason) isn't any particular type of block. You could use something like this
. So long as the rope will fit in it, you will be fine.
(N.B., those links are to my local chandlery which is UK based—while I think they're great I can quite literally walk there from my house—you'll want to find a chandlery local to you, or one of the US-based online ones. I just give those links as examples.)
The main sheet and not sure if the jib sheet ran though a (pulley) I think it was the jib sheets because the (Pulley) was on each side near the front of the cockpit and this (pulley) seems to have some sort of brake that I am not understanding as to why the sheet just dose not run back out. Point is am I looking for something like this (Pulley) and is that a block?
What you're describing sounds like a ratchet block. These are a special kind of block that have a ratchet in them to limit their ability to turn in one direction (they require a 'flick' towards you before they release). The purpose is to take some of the load on the sheet instead of your having to hold it.
Your mainsheet's last block (& last block only
) will probably be a ratchet block (if not, I'd think seriously about buying one). The jib blocks might be (these are the blocks on the diagram just next to the end of the dashed line labelled 75" Jib Track - CL of Track
. The primary spinnaker blocks also ought to be ratchet blocks—these can be seen on the diagram just below the jib blocks but above the thick black line running horizontally across the boat (at least, I'm pretty sure that's the right, but I've never seen or sailed an FJ).
In terms of cleats, cam cleats are usually the way forward, however side-entry clam cleats are workable alternatives (so long as you mount them the right way for the purpose). Horn cleats are usually to be avoided like the plague on dinghies! (If you don't know what those types of cleat look like, Google Image Search has tons of pictures).
Cam cleats are slightly faster to use, although the cleats you use on the spinnaker don't require rapid adjustment as you only cleat the windward sheet. The leeward sheet is held by the crew via the ratchet block.