Hello Stephen... & WELCOME to LMF...
It is much more economical to find out what is bad and replace That single part than start replacing things until you happen across the defective piece...
But it sounds as if you have a lot of new pieces so I do hope you kept the parts you removes because it's likely they are good & there are Times that New parts are bad, or with electrical parts, not the correct internal layout... so you really need to find whats not working...
When you attempt to start it is there any sound at all?
Can you carefully turn the engine over by hand?
Is there anything preventing the engine turning over, like belt(s) on the pulley(s) binding up?
When you hold to start for a couple seconds, is anything getting warm OR Hot?
Please post back with your findings on the above 4 things and I bet someone gives you a quick response... :smile:KennyV