would swapping a b16 head onto my block be a very difficult thing if i had the right tools. or would be safer to have a professional do it

 

If you are mechanically inclined and have the factory honda manual and pay close attention to detail you should be ok

If you arent mechanically inclined or just arent good working on cars dont do it

 

Either have to get specially machined dowels, or have the head drilled out....don't DIY that part!

Everything else like oil lines, you do. Plus you'll have to do some wiring...no matter if you just do a RPM switch, a VAFC, or a full ECU switch over.

 

what exactly are the dowels for,sorry kinda of in the dark about those things

 

Look up how to ls/vtec there is more than enough info on the net