trade me a nice s12 for this?

only sorta serious on this but i have always liked the way that the s12 looks.

I have a 1990 BMW 325I 4dr manual 190k runs like a champ i DD it no problems
but i am just kinda getting burnt out a bit on it.
here it is



so if i were to be serious about trading it could i get a swapped s12 for it?
a ca18det or sr20det or maybe a well done ka24de?
or should i just turbo the 325 and see how i like it?

Sell it, buy an S12, and modify yourself?