That Gold with Black VT is nothing short of strikingly HOT! If it were mine, the first thing I would do is replace the column shift. From there, I would just make sure everything operated as it should. Somewhere way down the road, I would even consider moving to a 340 (as I have done) and either keep the 904 or swap in a 727. But, keep in mind that 340's are expensive to acquire and expensive to build. So, keep the 318 if she runs good.
Charlie
70 Challenger
69 Camaro RS
ps: your ride has a nice stance. I hope it's not supported by air shocks!
Also, the TA exhaust system only fits certain 340 exhaust manifolds, so I am curious as to what mods they did to fit to the 318--- did they just cut and bend the pipe coming off the manifolds?