Can a merkur turbo engine be put as N/A?

yes the wireing will work if it's a 2.3 and a 2.3 wireing hraness if your wanting to turbocharge a 2.3 i have everything u need and then some for $250

If you plan on having a complete turbo swap in the future, then do all the wiring changes for one. Then all you have to do is temporarily route the VAM directly to the TB and use NA exhaust.

I'll warn you now, though, a turbo 2.3 with no turbo is going to be an 8:1 compression gutless wonder. It will have even less power than an NA d-port 2.3.