Can, but shouldn’t!
I would stick to standard pressure loadings. First, because it is near impossible to replace such a bespoke piece.
Secondly, it was regulated to shoot to point of aim with standard velocity 158gr bullets. A 158gr LSWC bullet at ~800fps isn’t tossing nerf balls!
Get a new Taurus .38 if you must shoot +P.
I ruined the accuracy of an early Model 14 by shooting less than 50rds of +P through it. It took replacing the hand, bolt, and stretching the gas ring to correct for the excessive end-shake, loose lock up, and late timing induced by the higher pressure loads.
The gun had been previously overhauled by the old S&W Performance Center with a rebarreling and refinishing. I shot a short lived National record with it in PPC.
FORTUNATELY, I was able to restore it with on-hand parts.
Unfortunately, parts are no longer being made and have became scarce…
Ask yourself if you “need” to shoot +P through your heirloom?