Lever Actions
Lever actions are a "fun" gun to use, as you have found out. The thing here, is you have not given anyone a direction to point you as far as a calibre or intended use for your choice.
If you are thinking of hunting with the occasional "blasting them downrange" session, then probably a 30-30 is a good calibre to choose. Other calibres are .45 Colt, .44 Rem. Mag., .35 Rem., .357 Magnum, 44-40 Win., and of course, the .22 LR. Bigger Calibres are the .45-70, .444 Marlin, and such. There are also 38-55, .307 Win., .356 Win., and such that are not so common, and are harder to obtain ammo for. And lets not forget the Winchester 71 in .348.
There are "replica" lever actions, copies of Winchester 66, 73, and 86 rifles, at higher prices due to the nostalgia factor and the cowboy action shooters. There are "modern" lever actions for "modern" calibres such as the Browning Lever Action, and the traditional types such as the Marlin 336 and the Winchester 94.
So, what are you going to do with it?
For my preference, if for a general, all round, lever action, I would choose either a Winchester 94 or Marlin 336 in 30-30 Calibre. The Winchester 94 is lighter than the Marlin, but if you ever intend to put a scope on one, there are problems. The older 94s are top eject, so mounting a scope has to be offset to the side. However, the later "angle eject" models are a lot better for scope mounting. Since Winchester has ceased production, it could be a factor, but there were millions of these made, so a spare part should not be any problem, except for maybe the later angle eject models. One big factor is that you darned near have to clean a Model 94 from the muzzle.
The Marlin 336 is still in production. It is a bit heavier than the Winchester 94, because the receiver is made from steel. It is side eject, which means that you can easily mount a scope. The thing I like about the Marlin 336 is that it can easily be cleaned by taking one screw out of the lever, and removing the bolt to the rear. This allows cleaning from the rear of the rifle, without possible damage to the muzzle.
Anyways, as you have seen from the previous posts, I would forget about the plastic stock replacement. That is, unless you intend to hunt in the darkness of the deepest woods where no one can see you.

You probably really don't want to be remembered as "the Dork with the plastic stock on a lever gun," and be reminded of your indiscretion for the rest of your life by your shooting buddies, and future generations to come.
