Suggestions? (t28 wastegate issue)

[four]

I got a used t28 off a supposed s15 which could only mean that it had to come from an auto S15 or a s14 sr20det. (the wall divider isnt there)

anyway:

the previous owner had it externally wastegated, therefore the internal wastegate door is welded shut. should I:

Get an external wastegate?
Get a new wastegate door and use the internal gate?
Use a dremel to dremel out the weld?

I also forgot to mention that the stock actuator isnt there, but I can get one easily.

thanks in advance