Can thus be converted to a SoftWash setup?

Curious if this could be turned to a SoftWash set up and if for 75, would it be worth the cost to do so?

No…

Yes it can. They actually sell them like that brand new from north star, check it out, there $500. But looks to me like the tank and cart would be the only thing you would use for a softwash conversion. Get a pump, and battery. Mount them conveniently. Get you your hose and make a Franken-wand and your good to go. Make sure you put a ball valve on the hose then a quick connect so you can remove your wand with out engaging the motor. You can use the pump on there now by mounting it to the loud of a 5 gal bucket so you got something to prespray concrete or whatever, that what I did. If you really want to do it I can walk you through it all. But as far as is it worth it for $75? I think that cart is on is cool. Other that you can find a 25 gallon tank with a 1 gpm pump on it online from walmart, wand and 10’ or 15’ hose included…

I’m with @DisplacedTexan . Skip the junk

He just asked if it could be done then if he should do it. Yes it can be done, and I’m in agree with you both, not he shouldn’t.

Better question is "Should I…* :>)