Working on Schofferhofer Grapefruit clone recipe

[Wreck99]

Interested in brewing a Schofferhofer Grapefruit clone. So it sounds like the concensus is to brew a good base wheat beer and then add in the Simply Grapefruit juice to keg as 50/50 and it comes out very close to the original?

 

[Wreck99]

Here is a recent grapefruit beer that I recently made and came out great.

3.5lbs 2 row
3lbs crystal 10l
2.25lbs wheat
1oz hallertauer @ 60min
1oz hallertauer @ 5min
3 lg grape fruits (juiced)

The grapefruit was added in the secondary and started another vigorous fermentation. The next time I am going to add 5 grape fruits and use some zest in the boil.

How close was this recipe to the original Schofferhofer?