Good evening, this is my 92 spacecab, looking for a straight grille if anyone happens to have one. thanks :)

For context I traded a 2005 envoy that had blown up on me for this 1989 mighty max I thought it was a 2.0l but when I get there I learn its a 2.6l but still go through with the deal, when I get the truck home though I leaned the head is blown and the trans is possibly having an issue. So I was wondering if it was even worth fixing the motor thats in it or just drop something else in there lik a Mopar 318 5.2l v8 or a ford 2.3l ranger motor. Edit: and the people that are more knowledgeable on these trucks than i am round about how much they think it would cost would be helpful too