D&D 3E/3.5 3.5 Looking for a template with no level adjustment that gives at least +1 to CON

[EzekielRaiden]

The thing about doing this through a template, as opposed to a different race, is that templates don't change the base race, nor eliminate racial bonuses like extra skills or feats.

Some templates don't. The Dragonborn of Bahamut is essentially a template, but it does strip you of most racial features, specifically including extra skills and feats.