I will answer these in the order in which they came:
@gunrunnerjohn
No, and especially not on the budget that I have. The closest match is the Lionel Legacy 2-8-0 which goes for about $700 on average. I do not have that kind of money at the moment for just the basis of this project plusthe additional funds to modify it from there. Also, the Legacy 2-8-0 is devoid of a crank on the siderod, so that messes up the aesthetic and would take more finicky work to guarantee proper fitting modification than just adding a leading truck and making some aesthetic changes. It's boiler is also slightly (and noticeably for a local train enthusiast like me) narrower than the B&LE 2-8-0, at least to my eyes and the members of my local O scale club i chatted with about this, with the MTH consolidation having the opposite issue of it being just a tad too fat since that one is modelled off of WM #734, an SC-1 of the LS&I modified to look like an H-9. Not to mention that the MTH models also tend to fetch almost identical prices to the legacy engine, hence the cost barrier. As far as I'm concerned I got this thing dirt cheap for having a fully working PS-3 upgrade, albeit without a box, hence the reason I'm even considering this project.
@prrhorseshoecurve
Something that I actually had not considered, so thank you! The MTH 2-8-0 wheelbase (after looking at my NYC version) looks to be closest because the wheels are closer together like the engine I want to recreate, unlike the Lionel one which spreads out the drivers a bit from one another. However, the absence of a crank is still my biggest complaint with that, as well as the strange looking gearing of the siderods that actually looks more like something off of the postwar box set 4-4-2's and 2-4-2's than anything else I can think of.
@Ron H
Well, thanks for the honesty I suppose, but regardless it is what I have and so what I will be using once I get started, especially since I don't have the liberty to buy something closer even if it did exist (see my 1st response). It would also be a waste to not use it since I have to do some minor touching up on it anyhow and plan to do some weathering in addition to that. Also the fact that it was bought cheap and therefore is not something I would mind having a few screw-ups with is one of the main reasons I'm giving this a shot.
To summarize, this is what I've got. No alternative options and with little ability to be particular about what I would have preferred to start from, and I am absolutely fine with making that work.
Now that that's all out of the way, would anybody have a suggestion as to a good way to secure leading wheels in front of the drivers? I have seen several parts I believe would look and function nicely as far as the main piece and wheels themselves, but I'm a little lost at how to best attach them.