ProxMox v1.3 retention

By removing pve from the /etc/apt/sources.list will it ensure that a fresh install of v1.3 will get the latest v1.3 updates of pve and avoid all v1.4 updates of pve?

After v1.3 was released, a few updates to pve v1.3 were there up until pve 1.4 was released. It is these interim updates to v1.3 that I would like to have on a fresh v1.3 install, that does not want any DRBD and other 1.4 features.
 
After v1.3 was released, a few updates to pve v1.3 were there up until pve 1.4 was released. It is these interim updates to v1.3 that I would like to have on a fresh v1.3 install, that does not want any DRBD and other 1.4 features.

I don't see why you want to stick at 1.3 - anyway, the update of 1.3 is called 1.4 (so it is not possible to do what you want).